package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {

    // 动态条件查询购物车数据
    List<ShoppingCart> list(ShoppingCart shoppingCart);

    // 根据id修改商品数量
    @Update("update shopping_cart set number = #{number} where id = #{id}")
    void updateNumberById(ShoppingCart cart);

    // 插入购物车数据
    @Insert("insert into shopping_cart (name, user_id, dish_id, setmeal_id, dish_flavor, number, amount, image, create_time) " +
            "values " +
            "(#{name}, #{userId}, #{dishId}, #{setmealId}, #{dishFlavor}, #{number}, #{amount}, #{image}, #{createTime})")
    void insert(ShoppingCart shoppingCart);

    // 统计当前菜品或套餐在购物车中的数量
    int count(ShoppingCart shoppingCart);

    // 删除购物车数据
    void delete(ShoppingCart shoppingCart);

    // 当前套餐或菜品在购物车中的数量减1
    void subNumber(ShoppingCart shoppingCart);

    // 清空购物车
    @Delete("delete from shopping_cart where user_id = #{userId}")
    void deleteAll(Long userId);
}
